Abstract:Objective To compare the clinical efficacy of the modified Koyanagi urethroplasty and the tubularized incised plate (TIP) procedure for hypospadias in children.Methods Retrospective analysis was performed on the clinical data of 104 children with hypospadias admitted to our hospital from January 2018 to October 2021, of whom 53 received the modified Koyanagi procedure (recorded as the study group) and 51 received the TIP procedure (recorded as the control group). Both groups were followed up for 12 months after the surgery. The operative duration, intraoperative blood loss, postoperative pain, urination function, and success rate of the surgery were compared between the two groups. Besides, the incidence of postoperative complications was also compared between the two groups.Results There was no significant difference in the operative duration and intraoperative blood loss between the two groups (P > 0.05). The comparison of Face, Legs, Activity, Cry and Consolability (FLACC) scale scores at 4 h, 12 h, 24 h and 48 h after the surgery between the two groups via repeated measures ANOVA revealed that the FLACC scores were different among the time points (F = 10.871, P = 0.000) but not different between the two groups (P > 0.05), and that there was no significant difference in the change trends of FLACC scores between the study group and the control group (P > 0.05). There was no significant difference in the maximal urine flow rate, average urine flow rate, urine volume and duration of urination 12 months after the surgery between the two groups (P > 0.05). The incidence of postoperative complications in the study group was lower than that in the control group (P < 0.05).Conclusions The modified Koyanagi procedure and TIP procedure exhibit similar efficacy for hypospadias in children, but the modified Koyanagi procedure has advantages in reducing postoperative complications.